Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline] RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445 Code: 00 00 74 08 4c 89 ef e8 0e ca 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 e1 c9 44 f6 48 89 2b 4c 89 fd 48 RSP: 0018:ffffc90000a18620 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888029c0bec8 RBP: ffff88801f2b82c1 R08: ffff888029c0c037 R09: 1ffff11005381806 R10: dffffc0000000000 R11: ffffed1005381807 R12: ffff88801f2b82c0 R13: dffffc0000000000 R14: 1ffff11003e57058 R15: ffff88801f2b82c0 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007e76c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sched_core_dequeue kernel/sched/core.c:283 [inline] dequeue_task+0x34d/0x550 kernel/sched/core.c:2031 detach_task kernel/sched/fair.c:9368 [inline] detach_tasks kernel/sched/fair.c:9504 [inline] sched_balance_rq+0x5d5b/0x8590 kernel/sched/fair.c:11648 sched_balance_domains+0x565/0xa90 kernel/sched/fair.c:12069 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112 Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d7 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 45 e1 aa 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246 RAX: ffff888017ec0000 RBX: ffff88801bad6864 RCX: 000000000001a5b1 RDX: 0000000000000001 RSI: ffff88801bad6800 RDI: ffff88801bad6864 RBP: 000000000003a6f8 R08: ffff8880b9137c7b R09: 1ffff11017226f8f R10: dffffc0000000000 R11: ffffffff8bbf7270 R12: ffff88801cfe0000 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f11c880 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702 cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:230 [inline] do_idle+0x375/0x5d0 kernel/sched/idle.c:326 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424 start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313 common_startup_64+0x13e/0x147 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline] RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline] RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445 Code: 00 00 74 08 4c 89 ef e8 0e ca 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 e1 c9 44 f6 48 89 2b 4c 89 fd 48 RSP: 0018:ffffc90000a18620 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888029c0bec8 RBP: ffff88801f2b82c1 R08: ffff888029c0c037 R09: 1ffff11005381806 R10: dffffc0000000000 R11: ffffed1005381807 R12: ffff88801f2b82c0 R13: dffffc0000000000 R14: 1ffff11003e57058 R15: ffff88801f2b82c0 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007e76c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 74 08 je 0xc 4: 4c 89 ef mov %r13,%rdi 7: e8 0e ca 44 f6 call 0xf644ca1a c: 4d 89 7d 00 mov %r15,0x0(%r13) 10: 49 8d 6f 01 lea 0x1(%r15),%rbp 14: 48 8b 5c 24 08 mov 0x8(%rsp),%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 27: fc ff df * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 e1 c9 44 f6 call 0xf644ca1a 39: 48 89 2b mov %rbp,(%rbx) 3c: 4c 89 fd mov %r15,%rbp 3f: 48 rex.W